UTCP (Universal Tool Calling Protocol) is an open standard for AI agents to call tools directly, positioned as a lightweight alternative to MCP. It eliminates the "wrapper tax" for lower latency by using a simple JSON manifest to connect to native APIs.
This is the 3rd launch from UTCP. View more
Code Mode
LLMs are great at writing code but struggle with writing tool calls. Code Mode solves this by giving your model ONE powerful tool: a TypeScript execution sandbox with access to your entire toolkit. Complex, multi-step workflows thereby become a single batched execution.
Independent studies show massive gains: 60% faster execution, 68% fewer tokens, 88% fewer round-trips, while Anthropic's research team found a massive reduction of 98.7% in token usage using CodeMode.
Free
Launch Team / Built With
UTCP
Hi Product Hunters,
I'm Ali, one of the folks behind UTCP, building together with @radulescu_razvan, @juan_viera_garcia1 and our amazing community of contributors.
Today we're launching the first implementation of Code Mode, a concept first put forth by Cloudflare, and later advocated for by Anthropic. Code Mode is the simplest way to let LLMs call MCP & UTCP tools by writing code, instead of tool calls.
The core idea: LLMs are great at writing code because they've seen a lot of code in their training data, but they're terrible at tool calling because they've barely seen it.
So instead of exposing hundreds of tool schemas, we give them one tool: a TypeScript execution sandbox with access to your entire toolkit enabling faster execution, fewer tokens and a significant reduction in context overhead for complex workflows.
Independent studies show massive gains: 60% faster execution, 68% fewer tokens, 88% fewer round-trips, while Anthropic's research team found a massive reduction of 98.7% in token usage using CodeMode.
Would love to see what you build with it. Join us on Discord, follow us on GitHub, or reach out if you want support integrating it into your agent stack.
And as always, we'd appreciate your feedback and support on today's launch!
lfg! may this launch help @UTCP get 1,000 GitHub stars!
UTCP
@fmerian we reached the 1,000 stars milestone yesterday. Thanks a lot for your continuous support of UTCP!
@aliraza36580 amazing! the @Product Hunt effect 👏👏
Swytchcode
This is amazing. I think you should publish MCP vs UTCP real soon so that we know the differences
UTCP
@chilarai thanks! you can already find a comprehensive comparison of MCP vs UTCP here on our website: https://www.utcp.io/utcp-vs-mcp
Swytchcode
@aliraza36580 thats great!
Interesting project. Congratulations on the launch!